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MS51862-12
Military Standard Screw
Description
Fastener Length: 1/4"
Specifications
| Countersink Angle | 81.0 degrees |
|---|---|
| Fastener Length | 0.281 inches minimum and 0.343 inches maximum |
| Features Provided | Casehardened |
| Head Diameter | 0.244 inches minimum and 0.279 inches maximum |
| Head Height | 0.048 inches minimum and 0.059 inches maximum |
| Head Style | Flat countersunk undercut |
| Internal Drive Style | Cross recess type 1 |
| Length | 21/64 |
| Material | Steel |
| Material Specification | Aisi assn std all material responses |
| Nondefinitive Specification/Std Data | Ab type |
| Nonmachine Thread Diameter | 0.138 |
| Nonmachine Thread Style | Gimlet point (type a, ab or ba) |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 3 fed spec all treatment responses |
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- MS51862-12C MS 21/64 in · Flat countersunk undercut · Steel
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Catalog data updated 2026-07-05. Report a data error